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Extending and Interfacing this Library
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<H2 CLASS="section"><A NAME="htoc74">6.5</A>&nbsp;&nbsp;Extending and Interfacing this Library</H2>

Because of the mapping of symbols to integers, new constraints over
symbolic variables can be implemented simply by placing numeric (IC)
constraints on the corresponding integer variables.<BR>
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Similarly, the facilities of the ic_search library can be exploited
when working with symbolic variables. Instead of labeling the
symbolic variables, one can use the various facilities of ic_search to
label the corresponding integer variables instead.<BR>
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